Ratchet-pawl mechanism.



No. 778,943. PATBNTED JAN. s, 1905. H. G. BBEDE.

RATCHET 'PAWL MEGHANISM.

APPLICATION PILD 00T.3,1904.

Patented January 3, 1905.

PATENT @Finca HERBERT G. BEEDE, OF PAWTUCKET, RHODE ISLAND.

RATCHET-PAWL MECHANISM.

SPECIFICATION forming part of Letters Patent No. 778,943, dated January 3, 1905.

Application led October 8, 1904. Serial No. 226,943.

To all zij/1,0m, it nur/y con/cern:

Beit known that I, HERBERT Gr. BEEDE, a citizen of the United States, residing at Pawtucket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Ratchet-Pawl Mechanism, of which the following is a speciiication.

My invention relates to a ratchet-pawl mechanism, and particularly to the let-off ratchetpawl-actuating mechanism used in connection with the builder motion on spinning and twisting machines.

The object of my invention is to improve upon the ordinary construction of the ratchetpawl mechanism of the class referred to.

In my improvements I provide a pendent let-ofi Wire or rod which is free to move in any direction to accommodate the movement of the builder-arm and pawl. Said pendent rod carries the pawl-dog, which is preferably adjustable thereon, and engages the upper surface of the pawl. I also provide a collar on the pendent rod below the -pawl, which coliar is preferably adjustable. Said collar prevents the rocker and the pawl carried thereon from becoming detached from the pendent rod and also acts to return the rocker and pawl back to place by engaging the under side of the pawl in case the rocker should catch.

I provide a rocker andv pawl carried thereon so constructed as to loosely surround the pendent let-off wire or rod and form a retainingguide therefor, so that said rod cannot be accidentally moved out of its proper position.

My invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

Referring to the drawings, Figure 1 is a front view of a ratchet-pawl-actuating mecl anism of the class referred to embodying my improvements. Fig. 2 is a plan view of the pawl portion, taken o n line 2 2, Fig. 1, looking in the direction of arrow a, same figure; and Fig. 3 shows a modified construction of the parts shown in Fig. 2.

In the accompanying drawings, 1 is a vertically-moving' arm, and in the lower end of said arm 1 is journaled a rotary shaft 2, on

the outer end of which is mounted a ratchet 3, secured thereon in this instance by two set- Vscrews 11. The ratchet 3 has an inwardly-extending hub, on which is loosely mounted the rocker 5, which has the enlarged or weighted .end 5, with an elongated slot 5 therein for the adjusting-screw 6 of the rocker stop-arm 7, (shown by broken lines,) all in the usual way. On the opposite end of the rocker 5 is pivotally mounted, in this instance by a screw 8, the pawl 9, which engages and rotates the ratchet 3.

All of the above-mentioned parts may be of the ordinary and well-known construction in ratchet-pawl-actuating mechanisms of lthe class referred to.

' I will now describe my improvements.

The pawl carrying end of the rocker 5 is preferably extended and offset, as shown at 5a in Fig. 2, to .form in connection with the pawl 9 an inclosed opening 10, through which extends a wire or rod 11, preferably of noncircular shape in cross-section. The opening 10 serves as a retaining-guide for the wire or rod 11, which I may term a pendent letoff wire or rod. On the lower end of the rod 11 is adjustably secured, by a set-screw or bolt 12, a collar 13, which in the vertical movement of the arm 1 and ratchetpawl mechanism is adapted to be engaged by the lower surface of the pawl 9 to prevent the end of the rod l1 moving out of the recess l0.

A second collar 14 is ad justably secured on the rod 11 by a set screw or bolt 15 above the pawl 9. The collar 14 preferably has a downward -extending projection 14 on its front surface to extend into the recessed upper surface of the free end of the pawl 9 when said pawl is moved into engagement with said collar 14:. The upper end of the rod 11 is secured in this instance by a set screw or bolt 16 in a boss 17 on the lower end of a link or strap 17, which is pivotall y secured at its upper end,

In Fig. 3 is shown a modified construction of the end of the rocker 5 and the pawl 9. (Shown in Fig. 2.) In said Fig. 3 the pawl 9 has a rearwardly-extending extension 9al and an arm 9u parallel to the pawl, forming with the end of the rocker 5 an inelosing opening or retaining-guide 10 for the wire or rod 11.

The operation of my improvements will be readily understood by those skilled in the art.

The position of the collar 14 on the rod 11 is adjusted according to the amount of rotary movement desired to be given to the ratchet 3 by the engagement of the pawl 9 with the projection 14 on the collar 14. The relative positions of the collars 14 and 13 may be adjusted so that any extreme movement of the arm 1, carrying the ratchet-pawl mechanism, may be obtained. The rod 1l, carrying the collars 13 and 14, extending through the inclosed opening or retaining-guide 10, prevents any possibility of the rod 11 being moved out of position to cause the disengagement of said collars from the pawl 9 or any liability oi' the collars slipping off of said pawl.

My improvements may readily be combined with and applied to ratchet-pawl-actuating mechanisms of the class referred to now in Having thus described my invention, what I claim as new, and desire to secure byLetters Patent, is-

1. In a ratchet-pawl mechanism, the combination with a ratchet, of a pawl, a rocker carrying said pawl, and forming with said pawl a retaining-guide for a rod, and said rod, and a collar thereon to engage said pawl, substan tially as shown and described.

2. In a ratchet-pawl mechanism, the combination with a ratchet, of a pawl, an arm carrying said pawl, and forming with said pawl a retaining-guide for a rod, and said rod, and a collar adjustable thereon to engage said pawl, substantially -as vshown and described.

3. In a ratchet-pawl mechanism, the combination with a ratchet, of a pawl, an arm carrying said pawl, and forming with said pawl a retaining-guide for a rod, and said rod, and two collars thereon, one above and one below said pawl, to engage the same, substantially as shown and described.

4. In a ratchet-pawl mechanism, the combination with a ratchet, of a pawl, an arm carrying said pawl, and forming with said pawl a retaining-guide for a rod, and said rod, and two collars adjustable thereon, one above, and one below said pawl, to engage the same, substantially as shown and described.

HERBERT G. BEEDE.

Witnesses:

JOHN C. DEWEY, M. HAAs. 

